3-D echocardiography grew out of existing 2-D techniques and uses many of the same tools. By tracking the size, shape, and
position of heart structures in dozens of imaging planes aligned in 3-D via common reference points, the new technique can reconstruct the entire heart as
a solid object with accurate representation of its shape, whether normal,
globally dilated, or locally aneurysmal.

In addition to the left ventricle, it is now possible
to reconstruct and model:

Right ventricular endocardium and epicardium, including interventricular
septum and outflow tract;

Right and left atria, with venous sinuses and ostia, and septal architecture;

From these reconstructions, 3D echocardiography allows quantitation
not only of size, shape, and function of various intracardiac structures,
but also of spatial and dynamic relationships between them.